Glass container



Marchl5, 1932. Q HAMMER 1,849,522

GLASS CONTAINER Filed Aug. 51, 1928 Patented Mar. 15, 1932 UNITED STATES PATENT OFF-ICE CHARLES HAMMER, OF HOLLIS COURT BOULEVARD, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO ANCHOR CAP & CLOSURE CORPORATION, OF LONG ISLAND OITY, NEW YORK, A CORPORATION OF NEW YORK GLASS CONTAINER Application filed August 31, 1928. Serial No. 303,148.

This invention relates to containers, more particularly to vacuum sealed glass containers adapted for use with rotary screw on and off caps or closures.

In a vacuum sealed container, great difiiculty is frequently experienced in releasing the cap to permit the .use of the contents, for the vacuum sealing of the container so firmly holds the cap on to the container that it is often difficult for the user to break this vacuum without mutilating the cap or at times breaking the container, but once the vacuum is released the cap is easily removed.

The present improvement overcomes these difficulties and is adapted to be used on various forms of containers, but is particularly adapted for use with a glass container.

An object of the present invention is to provide a container having suitable means to engage a cap and hold it securely thereon.

Another object of the invention is to provide an efficient construction on a container adapted to engage the cap to form a hermetic sea Another object of the invention is to provide simple, inexpensive means that will release a vacuum cap automatically upon turning the cap backward, whereby the cap can be readily reused to seal the contents.

A further object of the invention is to provide a cap with threads and stops so con structed to limit the rotation in applying the cap and to permit the cap to be removed or ap lied by a fractional turn thereof.

ther and further objects of the invention will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended In the drawings accompanying and forming part of this specification, Fig. 1 is a side view of this improved container;

Fig. 2 is a top view of the container.

Fig. 3 is a cross sectional view taken 0 line A-A, Fig. 1.

Fi 4 is a view of the container neck laidout a.

Fig. 5 is a similar view showing a different form of means for lifting the cap; and

Fig. 6 is a fragmentary, vertical side view, partly in section, showing a cap applied to a container.

Similar characters of reference indicate corresponding parts in the several views.

Before explaining in detail the present improvement and mode of operation thereof, I desire to have it understood that the invention is not limited to the details of construction and arrangement of parts which are illustrated in the accompanying drawings, since the invention is capable of other embodiments, and that the phraseology which I employ is for the purpose of description and not of limitation.

The thread may be of any suitable form and the container may have any desired number of threads suitable for the purpose. Inthe present instance the container 2 is provided with four threads 3, and the cap 1 when used with the number of threads shown is provided with four lugs or projections 10 to cooperate with the threads of the container, thereby sealing the container and pressing the gasket 11 over the mouth of the container. Several of the threads, in fact, all of them are preferably so formed at the tail or inner ends 4 of the threads as to have cams 5 at the upper sides of the threads in position to cooperate with' the lugs or projections 10 of the cap when the cap is turned back thereby to lift the cap and release the vacuum.

In the form shown in Fig. 5, these cams 6 are also located at the inner or tail ends of the threads, but are shown as forming a part of the container shoulder 7 and in this form thesecam faces are carried by the glass container independently of the threads, but are in position to accomplish the same purpose.

In practice, the under inclined face 8 of someor-allof the threads terminate in a stop face 9, two thereof being located at the seams of the container, thereby limiting the turning on movement of the cap. In Fig. 6, one form of cap, here illustrated as that shown in Patent No. 1,647,517, is shown applied to the container. The threads on the container are I spaced from each other, the cap may be placed thereon, a vacuum formed within the container, and the cap screwed home thereafter.

When, the cap is turned backward and at the time when the lugs or projections of the cap are free of the under holding side 8 of the thread, they will engage the cams or cam faces 5 or 6 of the next succeeding thread which will thus automatically force the cap upward and so break the vacuum thereby insuring a prompt and quick access to the contents without the use of a separate instrumentality or the knocking of the cap by the user to break the vacuum. Consequently the mutilation of the cap or liability of breaking the glass container to release the vacuum is avoided.

It will be seen that the construction of the present invention has a wide application and, thus, has numerous advantages over the prior art. The ease and efficiency container of this construction can be sealed has induced many manufacturers to adopt this form of closure. The removal of a lug cap which has been vacuum sealed on a container has been greatly facilitated. This adds materially to the popularity of both the ca s and the containers because they must e opened by housewives who are not ordinarily mechanically inclined.

As various changes may be made in the form, construction and arrangement of parts without departing from the spirit and scope of the invention and without sacrificing its advantages, it is to be understood that all matter herein is to be interpreted as illustrative and not in a limiting sense.

In vacuum-sealed containers, in which the cap is sealed by vacuum by suitable processing, by pouring the contents into the container hot or by cooking the contents therein or by withdrawing the air from the container by suitable means, the cap is so sealed to the top of the container that it is practically impossible to lift the cap from the mouth thereof until the vacuum is released, althoughthe cap can be rotated backward. When the cap is applied to the container, the locking projections or lugs of the cap ride down the under inclined faces of the threads until they reach the stop 9. On the turning backward of the cap, when the container is properly vacuum-sealed, the locking lugs of the cap will not ride up the under inclined faces 8 of the threads because, due to the vacuum-sealing thereof, the cap does not lift from the top of the container; consequently, the locking lugs turn backward in the same plane as they are in when they are locked in position at the point 9. In other words, these locking lugs on the turning backward of the cap, instead of riding up the under inclined faces 8 of the threads, move in a straight path and are thus spaced below the under inclined faces of the threads and so are brought into engagement with the camwith which the 7 formed portions 5 or 6, whereupon they ride up these inclined faces, which thus lifts the cap automatically and so releases the vacuum.

Having thus explained the nature of my said invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the modes of its use, I claim:

1. A vacuum-sealed container having inclined threads or projections and a cap having co'operating holding means for drawing down the cap and a sealing medium there in, the container threads being so located as to permit the cap sealing means to engage the top of the container and be vacuum-sealed thereon without interference by the container threads, said container and cap having one means for lifting the cap on the backward rotation thereof, thereby to release the vacuum.

2. A vacuum-sealed container having inclined threads or projections and a cap having co-operating holding means for drawing down the cap and a sealing medium therein, the container threads being so located as to permit the cap sealing means to engage the top of the container and be vacuum-sealed thereon without interference by the container threads, said container and cap having one cam-formed means for lifting the cap on the backward rotation thereof, thereby to release the vacuum.

3. A vacuum-sealed container having inclined threads or projections and a cap having co-operating holding means for drawing down the cap and a sealin medium therein, the container threads being so located as to permit the cap sealing means to engage the top of the container and be vacuum-sealed thereon without interference by the container threads, said container having means for lifting the cap on the backward rotation thereof, thereby to release the vacuum.

4. A vacuum-sealed container having inclined threads or projections and a cap having co-op'eratin'g holding means for drawing down the cap and a sealing medium therein, the container threads being so located as to permit the cap sealing means to engage the top of the container and be vacuum-sealed thereon without interference by the container, threads, said container having camformed means for lifting the cap on the backward rotation thereof, thereby to release the vacuum. a

5. A vacuum-sealed container having inclined threads or projections and a cap having co-operating holding means for drawing down the cap and a sealing medium therein, the container threads being so located as to permit the cap sealing means to engage the top of the container and be vacuum-sealed thereon without interference by the containof the lug cap.

eeaaaa er threads, said container having camformed means located at the tail end of a thread for automatically lifting the cap on the backward rotation thereof, thereby to release the vacuum.

6. A vacuum-sealed container having inclined threads or projections effective to draw down the cap on the rotation thereof and a cap having co-operating holding means and sealing means therein, the container threads being spaced endwise apart, thereby to permit the cap holding means to pass therebetween and permit the sealing means of the container toengage the top of the container and be vacuum-sealed thereon, said container and cap having one cam-formed means for automatically lifting the cap on the backward rotation thereof, thereby to release the vacuum.

v 7. A vacuum-sealed container having in clined threads or projections effective to draw down the cap on the rotation thereof and a cap having co-operating holding means and sealing means therein, the container threads being spaced endwise apart, thereby to permit the cap holding means to pass therebetween and permit the sealing means of the container to engage the top of the container and be vacuum-sealed thereon, said container having means located adjacent to the tail ends of the threads for automatically lifting the cap on the backward rotation thereof, thereby to release the vacuum. 1

8.'A container for a screw closure, having a shoulder thereon and comprising a plurality of ribs terminating in cam shaped means extending substantially below said ribs and merging into the shoulder and having a greater inclination than that of the ribs for co-operating with lugs or projections on a cap to break the vacuum seal on the container by lifting the cap upward upon backward rotation thereof, said ribs being spaced apart endwise thereof to prevent interference with.

the vacuum sealing thereof.

9. A container provided with a shoulder and a thread, the lower side of the thread being adapted to be engaged by a lug on a cap for holding the cap in position and provided with a cam formed means extending from and merging with the shoulder of the container for engaging the lower side of the lug on the cap and adapted to lift the cap upward upon backward rotation thereof, said threads being spaced apart endwise thereof to avoid interference with the vacuum sealing 10. A container having a plurality of looking projections adapted to engage a suitable cap to form a vacuum seal, several of them being provided at the inner tail ends of the upper portions with cam shaped stops extending from the shoulder of the container at a greater angle than the angle of the projection for engaging the locking lugs of the caps,

thereby being adapted to lift the cap upon backward rotation thereof and to release the vacuum in the container without mutilation of the cap, the end portions of adjacent looking projections being spaced circumferentially apart to permit the lugs of the cap to pass downwardly between the projections thereby facilitating the vacuum sealing of the cap.

11. A glass container adapted to form a hermetic seal with a lug closure cap having a plurality of threads provided with inclined lower holding faces merging into stop faces located at the seams of the container, some of said threads having their tail ends at the upper sides of the thread and provided with cam faces spaced forwardly of said stop faces and further downwardly than said holding faces for automatically lifting the cap upon backward rotation thereof thereby being adapted to release the vacuum in the container, said same faces being spaced a substantial distance from the head ends of the adjoining thread to facilitate the vacuum sealing of the cap by permitting the lugs thereof to pass therebetween.

Signed at Brooklyn, New York, this 29th day of August, 1928.

CHARLES HAMMER. 

